Cross-reference tags that occur in the body of a document are
represented internally as instances of object cross-reference
and contain a link to the object being referenced. Of course, how
such cross-reference tags are rendered depends on the currently active
rule for object cross-reference. The default rendering rule for
cross-references presents the user with a summary of the object being
cross-referenced, e.g., the number and title of a sectional unit. This
is followed by a non-speech audio prompt. Pressing a key at this
prompt results in the entire cross-referenced object being rendered at
this point -rendering continues if no key is pressed within a certain
time interval.
In addition, the listener can interrupt the rendering and move through
the cross-reference tags. This is useful in cases where many such tags
occur within the same sentence.